Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

Java Java Basics Perfecting the Prototype Looping until the value passes

Posted by Erin Burke
Erin Burke
9,286 Points

Do while loop question

I keep getting this question wrong but I'm not really sure what's wrong with my code, I've tried it a bunch of different ways.

Example.java 
// I have initialized a java.io.Console for you. It is in a variable named console.
String response = console.readLine("Do you understand do while loops?  ");
boolean invalidAnswer;
do {
  invalidAnswer = (response.equalsIgnoreCase("no"));
  if (invalidAnswer) {
    console.printf("Sorry! Try Again");
  }
} while (invalidAnswer);

1 Answer

Dave StSomeWhere
Dave StSomeWhere
19,870 Points
Dave StSomeWhere
Dave StSomeWhere
19,870 Points

Your issue is that you are not doing the prompt in to do while loop.

You need to just declare the new String response outside the loop and then do the prompt in the loop, just like you do with invalidAnswer

String response;
boolean invalidAnswer;
do {
  response = console.readLine("Do you understand do while loops?");
  invalidAnswer = response.equalsIgnoreCase("no");
  if (invalidAnswer) {
    console.printf("Sorry! Try Again");
  }
} while (invalidAnswer);

:tropical_drink: :palm_tree: